Astudent boils 9.43 grams of an unknown substance into vapor. if completely vaporizing the substance required 8,720 joules of energy, what is the heat of vaporization?

The heat of vaporization is  =924.71  j/g

explanation

Heat of  vaporization is amount  of heat require   to vaporize  1  gram  of a substance.

Heat of  vaporization required is therefore=8720  joules/9.43  grams=924.71   j/g

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume